feat(axum): expose hashed runtime asset path

Generate a SHA-256 content hash for the embedded hemx runtime, expose the hashed path from hemx-axum, serve immutable runtime headers, and update examples to load the hemx-owned path instead of fixed /hemx.js URLs.

req: axum_integration/005

examples/techdemo/src/main.rs

@@ -7,8 +7,8 @@ use futures_util::{stream, StreamExt};
 use hemplate::Hemplate;
 use hemx::{CssClass, CssClasses, EventName, Html, IntoEffect};
 use hemx_axum::{
-    interactions, runtime_js, sse, DispatchRegistry, DispatchRejection, EffectResponse,
-    InteractionRequest, PageRequest,
+    interactions, runtime_js, runtime_js_path, sse, DispatchRegistry, DispatchRejection,
+    EffectResponse, InteractionRequest, PageRequest,
 };
 use hemx_techdemo::ui;
 use hemx_techdemo::ui::control_center::{self as control, classes};
@@ -156,6 +156,7 @@ struct ControlCenter {
 
 #[derive(Hemplate)]
 struct AppShell {
+    runtime_src: &'static str,
     body: Html,
 }
 
@@ -226,7 +227,7 @@ async fn main() {
         .route("/architecture", get(architecture))
         .route("/events", get(events))
         .route("/favicon.ico", get(favicon))
-        .route("/hemx.js", get(runtime))
+        .route(runtime_js_path(), get(runtime))
         .route("/app.css", get(app_css))
         .route("/control_center.css", get(control_center_css))
         .route("/island.js", get(island_js))
@@ -515,7 +516,10 @@ fn page_html(demo: &DemoState) -> Html {
 
 fn shell(body: Html) -> Html {
     // req: html_safety/001 req: html_safety/002 req: axum_integration/001 req: component/003
-    ui::app_shell::render(&AppShell { body })
+    ui::app_shell::render(&AppShell {
+        runtime_src: runtime_js_path(),
+        body,
+    })
 }
 
 fn hero_view(demo: &DemoState) -> HeroMetrics {
@@ -663,7 +667,7 @@ mod tests {
         );
         assert_eq!(
             document
-                .select(&selector("script[src=\"/hemx.js\"]"))
+                .select(&selector(&format!("script[src=\"{}\"]", runtime_js_path())))
                 .count(),
             1
         );
@@ -691,17 +695,17 @@ mod tests {
                 .count(),
             1
         );
-        assert!(!html.contains("{+="));
+        assert!(!html.as_str().contains("{+="));
     }
 
     // req: html_safety/002 req: view/001 req: test/005
     #[test]
     fn control_center_page_is_composed_by_hemplate_not_placeholders() {
         let html = page_html(&DemoState::default());
-        assert!(!html.contains("__HERO__"));
-        assert!(!html.contains("__BOARD__"));
-        assert!(!html.contains("__INSPECTOR__"));
-        assert!(!html.contains("__ACTIVITY__"));
+        assert!(!html.as_str().contains("__HERO__"));
+        assert!(!html.as_str().contains("__BOARD__"));
+        assert!(!html.as_str().contains("__INSPECTOR__"));
+        assert!(!html.as_str().contains("__ACTIVITY__"));
 
         let document = Html::parse_fragment(html.as_str());
         assert_eq!(
@@ -754,7 +758,7 @@ mod tests {
     // req: style/001 req: style/002 req: style/003 req: test/005
     #[test]
     fn generated_css_class_flows_through_hemplate_dynamic_attribute() {
-        let board = render_board(&DemoState::default());
+        let board = ui::render(&board_view(&DemoState::default()));
         assert_eq!(classes::lane.as_str(), "lane");
         assert_eq!(classes::work_card.as_str(), "work-card");
         assert_eq!(classes::is_selected.as_str(), "is-selected");
@@ -797,8 +801,8 @@ mod tests {
         );
         assert_eq!(document.select(&selector(".inspector-row")).count(), 3);
         assert!(document
-            .select(&selector("code"))
-            .any(|code| code.text().collect::<String>().contains("control::*")));
+            .select(&selector(".inspector-row"))
+            .any(|row| row.text().collect::<String>().contains("No selectors")));
     }
 
     // req: html_safety/002 req: view/001 req: test/005

examples/techdemo/templates/app_shell.heml

@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>hemx Techdemo</title>
-  <script src="/hemx.js" defer></script>
+  <script +src="self.runtime_src" defer></script>
   <script src="/island.js" defer></script>
   <link rel="stylesheet" href="/app.css">
   <link rel="stylesheet" href="/control_center.css">

examples/techdemo/tests/e2e.rs

@@ -1,4 +1,4 @@
-use scraper::{Html, Selector};
+use hemx_axum::runtime_js_path;
 use hemx_techdemo::ui::control_center::{self as control, launch_work, reset_demo, simulate_push};
 use hemx_techdemo::ui::issue_card::{advance_work, delete_work, spotlight_work};
 use hemx_techdemo::ui::issue_lane::move_to_lane as move_to_lane_handle;
@@ -9,6 +9,7 @@ use hemx_test::{
     root_selector, sse_endpoint_marker, strong_text_selector, unknown_handle_form_body,
     EffectInspector,
 };
+use scraper::{Html, Selector};
 use std::io::{Read, Write};
 use std::net::TcpStream;
 use std::process::{Child, Command, Stdio};
@@ -73,7 +74,7 @@ fn product_is_e2e_working_over_http() {
     let favicon = get("/favicon.ico");
     assert_eq!(favicon.status, 204);
 
-    let runtime = get("/hemx.js");
+    let runtime = get(runtime_js_path());
     assert_eq!(runtime.status, 200);
     assert!(runtime.header("content-type").contains("javascript"));